Gather all ingredients and add them to your blender in this order: greek yogurt on the bottom (this helps it blend smoothly with the liquid), followed by the frozen strawberries, banana, oatmeal, peanut butter, honey, and a pinch of cinnamon. I like to add the yogurt first because it creates a smooth base that helps everything else blend evenly without clumping. Start with about 1/4 cup of water—you can always add more if needed.

Blend on high speed for 45-60 seconds until the mixture is completely smooth and the oats are fully broken down. Stop and check the consistency—frozen berries make the smoothie naturally thick, so you want to ensure everything is well combined without any visible chunks of fruit, oats, or peanut butter.

Pour the smoothie into a glass and assess the thickness. If it's too thick to drink, add water or milk in small increments (1 tablespoon at a time) and stir until you reach your desired consistency. If it's too thin or watery, add a few ice cubes and blend briefly. Finally, taste and add more honey if you'd like it sweeter. I find that one batch usually reaches the perfect consistency without adjustments, but frozen berries can vary in how much liquid they release.